Question

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1. Ashu has 630 in the denominations of 10 and
20 notes. If the total number of notes he has is
40. find how many each of 10 and 20 notes he
has.​

Answer 1

Answer:

Let the number of 10 and 20 notes be x and y respectively

So according to the question

=> 10x + 20y = 630 __Eq1

and

=> x + y = 40 __Eq2

In Eq2

==>x=40-y

Sub x= 40-y in Eq1

=>10(40 -y) +20y = 630

=>400 -10y +20y = 630

=>400 + 10y = 630

=>10y= 630 - 400

=>10y= 230

=>y= 230/10

Therefore y= 23

Sub y=23 in Eq 2

=> x + 23 = 40

=> x= 40-23

=> x=17

______________

Hence the total number of

rupee 10 notes are 17

rupee 20 notes are 23

Answer 2

Step-by-step explanation:

Yes. I go to allen. I am currently in class 10th.